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Finding the Fourth Proportional to 399,802.72, 599,984.28 and 231,090.87

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Solution

The fourth proportional to 399,802.72, 599,984.28 and 231,090.87 is: 346,798.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,802.72 : 599,984.28 = 231,090.87 : x
  2. Step 2: Convert to fraction form
    399,802.72/599,984.28 = 231,090.87/x
  3. Step 3: Cross multiply
    399,802.72x = 599,984.28 × 231,090.87
  4. Step 4: Simplify right side
    399,802.72x = 138,650,891,501.47
  5. Step 5: Solve for x
    x = 138,650,891,501.47/399,802.72
  6. Step 6: Final answer
    x = 346,798.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.